The Alconbury to Peterborough section of A1(M) runs generally on the line of the old Ermine Street Roman Road, and is therefore "straight" for a considerable part of its length. Between Alconbury and Stilton, it is more or less straight for a distance of nearly 7 miles. Minor deviations have, however, been necessary near to Sawtry and Connington to accommodate junctions and side road diversions.
Probably the longest individual section of straight motorway occurs on the A1(M) Durham Motorway, near Newton Aycliffe. The motorway immediately south of Bradbury (Junction 60) includes a 3½-mile straight section.